Modelling and characterisation of a magnetically coupled piezoelectric beam for energy harvesting gear meshing motion

IF 3.7 3区 材料科学 Q1 INSTRUMENTS & INSTRUMENTATION Smart Materials and Structures Pub Date : 2024-06-30 DOI:10.1088/1361-665x/ad59e7
Huifang Xiao, Xuyang Guan, Fan Zhang, Gang Liang, Yihu Tang and Chris Bowen
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Abstract

Gear transmission systems are crucial components for transmitting power and motion in a host of engineering applications. Recently, the potential to embed sensors into transmission components has attracted significant attention for accurate condition monitoring of system health. As a result, embedded sensors must operate in a safe and stable manner, whilst being able to provide a continuous power-supply and ensure operational autonomy. In this work, a magnetically coupled beam-type piezoelectric energy harvester is developed for energy harvesting of rotational centrifugal forces and individual gear meshing excitation events. A new coupled electromechanical dynamic model is developed to explain the working principle and response of the harvester when excited by a combination of gear meshing excitation events, a centrifugal force, and a magnetic force. Since gear meshing events are observed to lead to an increased hardening nonlinearity of the energy harvester, and a decrease in power output, a novel variable-section cantilever structure was developed. Our detailed theoretical analysis demonstrates that the novel variable stiffness structure improves both the power output and bandwidth, with excellent agreement with experimental measurements. This work provides new theoretical insights into the application of magnetically coupled piezoelectric energy harvesters for self-powered sensing systems for critical gear transmission systems.
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用于能量采集齿轮啮合运动的磁耦合压电梁的建模和特性分析
齿轮传动系统是众多工程应用中传递动力和运动的关键部件。最近,在传动部件中嵌入传感器以对系统健康状况进行准确监测的可能性引起了广泛关注。因此,嵌入式传感器必须以安全稳定的方式运行,同时能够提供持续的电力供应并确保运行自主性。本研究开发了一种磁耦合梁式压电能量收集器,用于收集旋转离心力和单个齿轮啮合激励事件的能量。我们开发了一个新的机电耦合动态模型,用于解释能量收集器在受到齿轮啮合激励事件、离心力和磁力的组合激励时的工作原理和响应。由于观察到齿轮啮合事件会导致能量收集器的硬化非线性增加,功率输出下降,因此开发了一种新型变截面悬臂结构。我们的详细理论分析表明,新型可变刚度结构提高了功率输出和带宽,与实验测量结果非常吻合。这项工作为将磁耦合压电能量收集器应用于关键齿轮传动系统的自供电传感系统提供了新的理论见解。
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来源期刊
Smart Materials and Structures
Smart Materials and Structures 工程技术-材料科学:综合
CiteScore
7.50
自引率
12.20%
发文量
317
审稿时长
3 months
期刊介绍: Smart Materials and Structures (SMS) is a multi-disciplinary engineering journal that explores the creation and utilization of novel forms of transduction. It is a leading journal in the area of smart materials and structures, publishing the most important results from different regions of the world, largely from Asia, Europe and North America. The results may be as disparate as the development of new materials and active composite systems, derived using theoretical predictions to complex structural systems, which generate new capabilities by incorporating enabling new smart material transducers. The theoretical predictions are usually accompanied with experimental verification, characterizing the performance of new structures and devices. These systems are examined from the nanoscale to the macroscopic. SMS has a Board of Associate Editors who are specialists in a multitude of areas, ensuring that reviews are fast, fair and performed by experts in all sub-disciplines of smart materials, systems and structures. A smart material is defined as any material that is capable of being controlled such that its response and properties change under a stimulus. A smart structure or system is capable of reacting to stimuli or the environment in a prescribed manner. SMS is committed to understanding, expanding and dissemination of knowledge in this subject matter.
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